Resilient wheel.



J.. ROUNTREE.

RSILIENT WHEEL.

APPLICATION FILED JULY 27, 1908.

Patented Nov. 9,1909.

-A TTORNE Y WITNESSES:

ionirnn y er essence JAMES RQUNTBEE, 0F BERKELEY, CALIFGRNA.

EESILIENT VIHEEL.

specification of Letters retest.

Application lc July 27,1908. Serial No. 445,676.

To all whom it may concern: l

Be it known that I, JAMES ROUNTREE, a citizen of 'the United States, residing at Berkelein the county of Alameda and State ol Californie, have invented new and useful improvements in Resilient Wheels, or"v Fig. 2 isa broken axial section thereof; lig.

3 is e broken side view of one of the rings showing the inner ends of several spokes; Fig. d is e pien View of the liub, certain of the spokes being removed. 'f

lefering to the drawing, l indicates n comparatively long hub section having e, flange 2, extending therefrom intermediate of the ends thereof, and 3 indicates e second and shorter huh section having a' flange i extending from the inner end thereof.

5 indicates rings formed vwith crown flanges o, extending toward each other, and fo 1ined on their inner edges with rounded sockets 7 to receive the cylindrical portions of hollow spokes 8. Said rings ure also formed with tapering` recesses 9 to receive the tapering ends of said spokes, seid taper, however, being only inl the circumferential direction ot' the wheel, us indicated in Fig. 3, and not in the axial direction thereof. llfithin the cylindrical hollow spokes reciprocate plungers 10 which are normally pressed outward by coiled snrings l2 interposed between the cndsot the plungers and transverse partitions 13 formed in said spokes. The plungers lit sutliciently close within the hollow spokes that the air cannot readily escape from between the inner ends of the plungers und the partitions, and thus the air-,forms u cushion for the plunger, in addition to the spring l2. The sA okes are secured in place in the rings ent the cup sections by means of bolts 14 which pass through notches or recesses l5 formed in the sides of the spokes. The plungers press at their outer ends against an annular web 16 formed upon a rim 17, upon which is sewitnesses.

cured, by U-bolts 1S, e solid rubber 'tire i9,

The outer ends of the s okee ere slotted es i r",

shown at 20, to permit scid to rec cete, with the plungers, in seid spokes. rim 17 is formed with a centrei' portie i which. is liet in on azie-,l or trensverse d' tion, end with marginal porti is recede from the central let po edges of which ere bent heck i them to form lips 2- to engage the rohher tire l?" and hold'itiin place. These project farther from center the wheel than the central flat portion, so that, cese of necessity said 'tire canw ne rei/no-F and 2G pressing the at the top of the ich upward in the Ets 2O oi c plungers l0 o--owing,x tween the top and bottom, slides through the slots of the 'spokes transverse.;Y to the plungers.

By the above construction l provide wheel. possessed of greetresiliency, both'- pneumatic and metallic; which is se con structed as to provide great/residence against side strains 'transmitted 'from the, rim to the hub; which can be readily teken apart and assembled; which is comparatively cheap in construction; and which will not easily get out, of order.

l claini:-

A wheel having n hub, radial hollow spokes lixedly secured to said hub, coiled springs therein, reciprocating` plungers within the spokes, pressed outward lby said springs, ainda rizn having un annuler inwardly extending web, the spokes being; slotted at their outer ends to receive said web, and the web ot said rim being lo ly received within said slotted ends in contenty with the outer ends of the plunger, substantially as described.

ln tcstiinonylwhereoi l have hereunto set my hend in the presence of two subscribingA *JAMES* noemens- Witnesses:

FRANoIs WRIGHT, D. B. RICHARDS.

s do not n of) 

